2015 Mercedes-Benz S63 AMG Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2015 Mercedes-Benz S63 AMG and How to Address Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2015 Mercedes-Benz S63 AMG is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2015 Mercedes-Benz S63 AMG is leaking oil?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What steps should I take to diagnose the oil leak in my 2015 Mercedes-Benz S63 AMG?

To effectively diagnose an oil leak in your 2015 Mercedes-Benz S63 AMG, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by locating the leak; inspect the area beneath your vehicle for any visible oil spots or puddles, which can provide initial clues. Next, turn your attention to the engine components, focusing on the oil pan, valve cover gaskets, and oil filter housing, as these are common culprits for leaks. It’s also crucial to check your oil level; a significant drop may indicate a serious leak that requires immediate attention. Don’t overlook the oil filter, as a damaged or improperly installed filter can lead to leaks as well. Additionally, examine the oil drain plug to ensure it is securely tightened, as a loose plug can also be a source of oil loss. If these steps do not reveal the source of the leak, or if you suspect a more complex issue, it’s wise to consult a qualified mechanic for a comprehensive diagnosis. By following this methodical approach, you can efficiently identify and address the oil leak in your vehicle.

What are the common causes of oil leaks in a 2015 Mercedes-Benz S63 AMG?

When dealing with oil leaks in a 2015 Mercedes-Benz S63 AMG, it's crucial to understand the common culprits that may be at play. One of the primary sources of leaks is the valve cover gaskets, which can deteriorate over time, leading to noticeable oil seepage. Another frequent issue is the oil pan gasket, which may wear out or sustain damage, resulting in oil leaking from the engine's base. Additionally, the oil filter housing gasket can become faulty, causing leaks around the oil filter area, while the seals surrounding the oil cooler can also deteriorate, contributing to oil loss. Lastly, a failing rear main seal can lead to significant leaks at the back of the engine. Addressing these issues promptly is essential to prevent further engine damage and maintain optimal vehicle performance. Regular inspections and maintenance can help detect these leaks early, allowing for timely repairs and ensuring the longevity of your vehicle.

How urgent is it to address the oil leak in my 2015 Mercedes-Benz S63 AMG?

Addressing an oil leak in your 2015 Mercedes-Benz S63 AMG is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. Ignoring an oil leak can lead to a significant drop in oil levels, which compromises the lubrication of essential engine components, increasing the risk of severe damage over time. Furthermore, a leaking oil system can cause the engine to overheat, potentially resulting in costly repairs or even catastrophic engine failure. The safety implications are equally concerning, as oil dripping onto hot engine parts can create a fire hazard, putting both the vehicle and its occupants at risk. By promptly addressing the oil leak, you not only safeguard the performance and longevity of your vehicle but also ensure a safer driving experience. Therefore, it is crucial to take action as soon as you notice any signs of an oil leak to prevent further complications and maintain the health of your Mercedes-Benz S63 AMG.

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